v8: support gc profile #46255

theanarkh · 2023-01-18T16:33:30Z

support gc profile. the content is as follows.

{
  "version": 1,
  "startTime": 1674059033862,
  "statistics": [
    {
      "gcType": "Scavenge",
      "beforeGC": {
        "heapStatistics": {
          "totalHeapSize": 5005312,
          "totalHeapSizeExecutable": 524288,
          "totalPhysicalSize": 5226496,
          "totalAvailableSize": 4341325216,
          "totalGlobalHandlesSize": 8192,
          "usedGlobalHandlesSize": 2112,
          "usedHeapSize": 4883840,
          "heapSizeLimit": 4345298944,
          "mallocedMemory": 254128,
          "externalMemory": 225138,
          "peakMallocedMemory": 181760
        },
        "heapSpaceStatistics": [
          {
            "spaceName": "read_only_space",
            "spaceSize": 0,
            "spaceUsedSize": 0,
            "spaceAvailableSize": 0,
            "physicalSpaceSize": 0
          }
        ]
      },
      "cost": 1574.14,
      "afterGC": {
        "heapStatistics": {
          "totalHeapSize": 6053888,
          "totalHeapSizeExecutable": 524288,
          "totalPhysicalSize": 5500928,
          "totalAvailableSize": 4341101384,
          "totalGlobalHandlesSize": 8192,
          "usedGlobalHandlesSize": 2112,
          "usedHeapSize": 4059096,
          "heapSizeLimit": 4345298944,
          "mallocedMemory": 254128,
          "externalMemory": 225138,
          "peakMallocedMemory": 181760
        },
        "heapSpaceStatistics": [
          {
            "spaceName": "read_only_space",
            "spaceSize": 0,
            "spaceUsedSize": 0,
            "spaceAvailableSize": 0,
            "physicalSpaceSize": 0
          }
        ]
      }
    }
  ],
  "endtTime": 1674059036865
}

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

src/node_v8.cc

doc/api/v8.md

lib/v8.js

src/node_v8.cc

src/node_v8.h

src/node_v8.cc

doc/api/v8.md

lib/v8.js

src/node_v8.cc

test/common/v8.js

test/parallel/test-v8-take-gc-profile-exit-before-stop.js

test/parallel/test-v8-take-gc-profile-in-worker.js

test/parallel/test-v8-take-gc-profile.js

doc/api/v8.md

jasnell · 2023-01-20T02:27:30Z

The perf_hooks module already has a PerformanceEntry type for GC operations. I'm wondering if it would make more sense to add this additional detail to that existing API than to add an entirely new API.

theanarkh · 2023-01-20T03:27:16Z

The perf_hooks module already has a PerformanceEntry type for GC operations. I'm wondering if it would make more sense to add this additional detail to that existing API than to add an entirely new API.

Every time a GC occurs, perf_hooks will create a new entry and call JS callback later, I'm not sure If this will cause performance problems when GC is frequent, so i think we can implement this in C++. And we can add more informations in this API in the furure, like process.report do, such as GC load.

Currently i think the user can implement GC profile in JS land by combine perf_hooks, v8.getHeapSpaceStatistics() , and v8.getHeapStatistics(). i also try to implement GC load by perf_hooks(nodejs-gc-load), but i am going to implement this in Node.js Core.

nodejs-github-bot · 2023-01-21T14:07:56Z

CI: https://ci.nodejs.org/job/node-test-pull-request/49119/

nodejs-github-bot · 2023-01-25T03:04:18Z

CI: https://ci.nodejs.org/job/node-test-pull-request/49159/

nodejs-github-bot · 2023-01-25T09:39:10Z

CI: https://ci.nodejs.org/job/node-test-pull-request/49165/

nodejs-github-bot · 2023-01-25T12:02:12Z

Landed in 733ef4e

PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 deps: * upgrade npm to 9.4.0 (npm team) #46353 esm: * leverage loaders when resolving subsequent loaders (Maël Nison) #43772 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46455

PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

Notable Changes buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: TDB

Notable Changes buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

Notable Changes: buffer: * add isAscii method (Yagiz Nizipli) #46046 fs: * add statfs() functions (Colin Ihrig) #46358 src,lib: * add constrainedMemory API for process (theanarkh) #46218 v8: * support gc profile (theanarkh) #46255 vm: * expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

Notable Changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: https://github.com/nodejs/node/pull/46920/commits

Notable changes: buffer: * (SEMVER-MINOR) add isAscii method (Yagiz Nizipli) #46046 doc,lib,src,test: * rename --test-coverage (Colin Ihrig) #46017 fs: * (SEMVER-MINOR) add statfs() functions (Colin Ihrig) #46358 src,lib: * (SEMVER-MINOR) add constrainedMemory API for process (theanarkh) #46218 test_runner: * add initial code coverage support (Colin Ihrig) #46017 * (SEMVER-MINOR) add reporters (Moshe Atlow) #45712 v8: * (SEMVER-MINOR) support gc profile (theanarkh) #46255 vm: * (SEMVER-MINOR) expose cachedDataRejected for vm.compileFunction (Anna Henningsen) #46320 PR-URL: #46920

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theanarkh force-pushed the support_gc_profile branch from c54c984 to 2b5c23c Compare January 18, 2023 16:37

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v8: support gc profile

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theanarkh force-pushed the support_gc_profile branch from 50a83ff to ce2b9fe Compare January 24, 2023 17:01

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ruyadorno pushed a commit that referenced this pull request Feb 1, 2023

v8: support gc profile

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PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

ruyadorno mentioned this pull request Feb 1, 2023

v19.6.0 proposal #46455

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v8: support gc profile

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PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

juanarbol mentioned this pull request Mar 3, 2023

V18.15.0 proposal #46920

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juanarbol pushed a commit that referenced this pull request Mar 3, 2023

v8: support gc profile

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PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

juanarbol pushed a commit that referenced this pull request Mar 5, 2023

v8: support gc profile

02632b4

PR-URL: #46255 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

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v8: support gc profile #46255

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v8: support gc profile #46255

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